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An ancient rock painting of a marsupial lion, Thylacoleo carnifex, from the Kimberley, Western Australia

Authors:
  • Akerman Anthropology
Antiquity Project Gallery
Vol 83 Issue 319 March 2009
An ancient rock painting of a marsupial
lion, Thylacoleo carnifex,
from the Kimberley, Western Australia
Kim Akerman & Tim Willing
Introduction
In June 2008 Tim Willing, while exploring rock art on the north-western coast of
the Kimberley, found and recorded the image of a large striped quadruped
painted in a shelter near the western shore of the Admiralty Gulf. Unfortunately
conditions permitted the taking of only three digital images. Reviewing these,
Akerman considered that they depicted a marsupial lion (Thylacoleo carnifex)
rather than a thylacine or Tasmanian tiger (Thylacinus cynocephalus).
In an earlier paper Akerman (1998) had described another painting of a large
quadruped, also from the north Kimberley, and suggested, after reviewing the
palaeontological literature and literature dealing with representations of ancient
fauna in Aboriginal rock art (Calaby & Lewis 1977; Murray & Chaloupka 1984;
Lewis 1986; Chaloupka & Murray 1986), that it possibly represented a
Thylacoleo. The 2008 image however clearly shows a number of features,
absent in the image previously described and which tend to confirm that it
represents a Thylacoleo.
The images of the painting were forwarded to palaeontologists Peter Murray
(formerly of the Central Australian Museum, Alice Springs, Northern Territory ),
John Long (Museum of Victoria in Melbourne) and Rod Wells (School of
Biological Sciences, Flinders University, South Australia ), who have all worked
intensively on Thylacoleo material. All three had no hesitation in accepting the
identification of the animal as a Thylacoleo. Clay Bryce (Aquatic Division,
Western Australian Museum in Welshpool) generously provided a DVD of the
The Bone Diggers (Bryce & Searle 2006), a documentary about a complete
Thylacoleo skeleton which proved relevant to this discussion.
At the time of discovery, the three images were taken under adverse conditions
at the end of the day. Due to the tight voyage itinerary there was no opportunity
to re-visit the site and systematically record the painting in greater detail.
The image
Figure 1. Photo taken at a slightly oblique angle showing the entire painting of a
Thylacoleo.
Click to enlarge.
The animal is depicted outlined in red ochre (Figure 1). There has been some
bleeding of the ochre, particularly about the head but this does not obscure it.
Mineral deposits run in a thin trail down the wall of the shelter and divide the
muzzle of the beast and a second trail obscures one ear. Some deposit intrudes
upon the dorsal line and a larger deposit covers areas of the end of the tail. A
number of other paintings, but of a dark mulberry colour, appear to have been
superimposed upon the main painting at some later date.
These include:
i. a small painting, possibly a 'Clothes Peg' Bradshaw (Gwion) depicting a
female figure with raised arms which is placed over the thorax of the animal but
does not obscure it;
ii. an enigmatic figure, possibly the remains of a Tassel Bradshaw (Gwion)
that lies across and below the cervical area and impinges upon the forearm of
the animal;.
iii. fern-like structures over the stomach and in front of the forepaw;
iv. a tail, with tufted tail-tip is located in front of the head of the main figure
and painted in the same manner. Unfortunately other details of this figure,
because of its proximity to the entrance of the shelter, have been obliterated.
However this tail-tip and that of the main figure are very alike, and both are
strikingly similar to an image thought to represent a Thylacoleo illustrated in
Murray & Chaloupka (1984: 111, Figure 6d).
The figure (Figure 2) is exceptionally clear and without any overpainting that
obscures major features or could lead to the suggestion that the figure is a
‘construct' serendipitously made from elements of otherwise unrelated paintings
(Lewis 1986). though no scale was available at the time it was estimated that the
overall length of the rock painting was about 2m.
Figure 2. Detail of the Thylacoleo showing the tail of another animal in front of
the primary image, drawn from a digitally enhanced image. The head is broad
and deep with a blunt muzzle, rather than elongated, as are thylacine heads. The
striping on the dorsal region is also more extensive than that recorded for
thylacines, where striping is usually restricted to the lumbar and upper tail region.
Click to enlarge.
Figure 3. Detail of the head and forepaw of the Thylacoleo, also showing the
superimposition of other art, drawn from a digitally enhanced image. The broad
paw with extended claws is quite different from the dog-like pads depicted on
images of thylacines.
Click to enlarge.
The head is large and rectangular with prominent triangular ears. The large
round eye is clearly shown. Although there is some running of the ochre since it
was originally painted, a pupil may have been indicated. Possibly a small eye
was painted initially and then re-painted at a larger scale to encompass the
original eye and make it appear to have a pupil. In front of the lower muzzle there
appears to be a protruding rhomboidal feature. A mineral deposit makes it
difficult to determine if this feature is connected to the muzzle, but it is of a similar
pigment to the main figure and may represent a protruding lower incisor.
The front leg is carefully drawn as if to emphasise the robust musculature of both
upper and lower limb, while the paw is shown in plan-view with pads and claws
extended. The artist has depicted the paw in great detail, as clearly in fact as a
person today would draw the tracks of a dingo or kangaroo (Figure 3).
Short stripes run along the dorsal region, from the shoulders to the base of the
tail, but they are not present on the tail. The stripes penetrate a little more than a
third of the way across the body. There appears to be a darker area connecting
the lower ends of the stripes - but this also may be due to bleeding of the ochre
subsequent to application.
Figure 4. Details of the hindquarters of the Thylacoleo, showing hind foot,
genitalia and tail, drawn from a digitally enhanced image. Compared with the
powerful forequarters, the hindquarters appear underdeveloped. This apparent
asymmetry is not seen in rock art images of thylacines, where both hind and fore
limbs are usually of similar dimensions. However thylacoleos were equipped with
powerful claws on the hind limbs and these appear to be depicted in this image.
Click to enlarge.
A long thin tail, gently arching upwards from the base, accounts for about a third
of the total length of the animal. The tail appears to be tufted, but, as noted
above, mineral deposits obscure parts of the tip. The animal is clearly male:
immediately below the base of the tail a downwardly curving, pointed penis
projects from the cloacal region and below this there is a more rounded sac-like
scrotum (Figure 4). This marsupial arrangement of cloaca, which conceals the
reproductive apertures as well as those of the alimentary and urinary systems, is
placed in the case of the male animal behind the scrotum.
The short, solid, hind leg is shown with the whole foot in an almost horizontal
position, and with the heel clearly indicated. The hind paw appears to be slightly
splayed as if gripping the ground and supporting the weight of the animal, which
is reaching out and swiping with the forepaw.
Discussion
The figure is 'cat-like' rather than 'dog-like'. The head is large with a bluff profile
and does not have the drawn-out muzzle found in rock art images of other striped
animals - particularly thylacines. Thylacoleos were animals equipped with huge
shearing premolars and the shape of the head reflects the massive jaw muscles
used to operate them. It has been suggested that the highly developed incisors
are used for both grabbing and stabbing when killing prey (Wells et al. 1982;
Bryce & Searle 2006) and it is possible that the lozenge-shaped figure shown in
front of, or possibly part of, the lower jaw, represents the diprotodontid, pointed,
lower incisors characteristic of these animals.
As the animal is definitely male and the penis is erect, it can be presumed to be
in breeding mode. The possible presence of the tufted tail of a second animal in
front of its muzzle suggests that it is pursuing a similar animal; perhaps the panel
originally depicted two beasts in courting mode. If this were the case, then it is
also possible that the feature in front of the muzzle may in fact be a protruding
tongue.
The artist appears to place a degree of emphasis on the massive clawed paws.
As well as other digits, the carefully painted forepaw appears also to show one
enlarged digit and claw. Thylacoleo had large, retractable claws on both fore and
hind limbs and the thumbs were particularly large in relation to the other digits.
Reconstructions (Wells & Nichol 1976; Wells et al. 1982; Wells 1985; Bryce &
Searle 2006) suggest that the animal supported itself by rocking back on the hind
feet using the tail as a prop, and delivered powerful smashing blows with the
fearsomely clawed, front paws. The paws were probably also used to grasp prey
before killing by biting with the large incisors.
On the hind paw, one toe has also been depicted larger than the others. In life,
the structure of the Thylacoleo hind foot included an enlarged and opposable big
toe, which suggests that the animal could also climb extremely well. The hind
legs are however much less robust in relation to the forelimbs, a feature
confirmed by the actual anatomy of these limbs in a skeleton recovered at
Nullarbor (see below). The artist's understanding and appreciation of the
particularly dangerous nature of the forelimbs and paws may possibly be inferred
by the apparent differentiation in emphasis between the fore and hind limbs.
The discovery of the complete skeleton of a Thylacoleo carnifex in a cave on the
Nullarbor Plain in the recent past has allowed palaeontologists to reconstruct
accurately the animal and investigate and answer a number of questions about
its bio-mechanics. The DVD The Bone Diggers: mystery of a lost predator (Bryce
& Searle 2006), covering the discovery, retrieval, reconstruction and some of the
initial findings of the bio-mechanical and other anatomical investigations carried
out to date has been most valuable in relation to the understanding of the rock art
image.
In many ways the 2008 Kimberley painting of Thylacoleo also adds to our
knowledge of the animal's appearance that, without the discovery of a mummified
animal, would have remained conjecture. The artist has depicted a tail with tufted
tip. The ears are pointed rather than rounded. The animal is striped, rather than
spotted, or spotted and striped as shown in some reconstructions. The stripes
are shown to run the length of the body between the shoulders and the base of
the tail, but do not cross over the body into the belly and flanks.
The presence of the eye - a feature rarely shown in other early animal images of
the region - suggests that it was a significant element of the animal's identity, for
the artist at least. The eye is huge, and raises the possibility that the creature
was a nocturnal hunter - even if the 'pupil' was not deliberately intended.
The fern-like figure referred to earlier that is painted in front of the forepaw and
perhaps intruding on to it, may or may not be part of the larger image (Figure 3).
It may be that either the original artist incorporated an existing figure to suggest
the scratches left by an animal marking its territory, or a later artist has added the
fern-like figure for the same purpose.
Finally it appears that the image was part of a larger panel, incorporating at least
one other individual and possibly representing the animals involved in courtship.
The painting itself, falls into the stylistic regime described by Walsh (1994: 76),
as the Irregular Infill Animal Period, Zoomorphic Group, Large Naturalistic
Macropod Sub-Group - and which lies within Walsh's Archaic Epoch of the
Kimberley Rock Art Sequence. Perceiving similarities in the Kimberley with
elements in the Arnhem Land Rock Art Sequence created by Chaloupka
(Chaloupka 1993: 94), we believe this sub-group would possibly be better called
‘the Large Naturalistic Animals Period', as ‘irregular infill' may not necessarily be
present.
Conclusions
In the discussion of a seminar on Kimberley rock art, Welch (2007: 155) suggests
that the only confirmed figure of any Australian megafauna found in the rock art
of the continent is the picture of the Marsupial Tapir, Palorchestes described by
Murray & Chaloupka (1984: 111; Chaloupka 1993: 100). These authors did
suggest that other 'cat-like' animals that appear in Arnhem Land rock art may
also represent the Marsupial Lion, Thylacoleo carnifex. Akerman (1998) has
suggested that a painting found in the King George River region of the Kimberley
may also possibly represent this animal. With the finding of the 2008 figure
however we have indisputable evidence that some early Aboriginal people were
not only familiar with megafauna, in this case, Thylacoleo carnifex, but also
recorded the salient features of this, now long extinct, animal in a manner that
resonates across the millennia.
Acknowledgements
Kim Akerman wishes to thank Pearl Sea Coastal Cruises and the Australian
Geographic Society for providing the opportunity to participate in two memorable
voyages exploring the rock art of the northwest Kimberley coast. Captains Ben
Bonnett and Neil Harding and the crew of the Kimberley Quest II are thanked for
the generous provision of dinghy access - as well as for sharing our passionate
enthusiasm for Kimberley rock art. Our thanks also go to Clay Bryce who
provided copies of the DVD The Bone Diggers: mystery of a lost predator, and to
John Long, Peter Murray and Rod Wells who confirmed our initial identification of
the painting as a Thylacoleo. Rod Wells also commented on our original
manuscript. The generous assistance of Gunnar Syren in producing the black
and white tracings of the digital images is most gratefully acknowledged. Finally
we wish to thank the Wunambal Gaambera Aboriginal Corporation at Kalumburu,
for allowing us to work in their country and in particular Sylvester Mangalomara,
as 'countryman' and teacher, for both his friendship and knowledge during the
rock art voyages.
References
* AKERMAN, K. 1998. A rock painting, possibly of the now extinct marsupial
Thylacoleo (marsupial lion), from the north Kimberley, Western Australia. The
Beagle, Records of the Museum and Art Gallery of the Northern Territory 14:
117-21.
* BRYCE, C. & M. SEARLE. 2006. The Bone Diggers: Mystery of a Lost
Predator. DVD produced by the Western Australian Museum and the Storyteller
Media Group. Western Australia.
* CALABY, J.H. & D.J. LEWIS. 1977. The Tasmanian Devil in Arnhem Land
rock art. Mankind 11(2): 150-1.
* CHALOUPKA, G. 1993. Journey in time: the world’s longest continuing art
tradition: the 50,000 year story of the Australian aboriginal rock art of Arnhem
Land. Chatswood, NSW: Reed.
* CHALOUPKA, G. & P. MURRAY. 1986. Dreamtime or reality? A reply to
Lewis. Archaeology in Oceania 21(2): 145-57.
* LEWIS, D. 1986. The Dreamtime animals: a reply. Archaeology in
Oceania 21(2): 140-5.
* MURRAY, P. & G. CHALOUPKA. 1984. The Dreamtime animals: extinct
megafauna in Arnhemland rock art. Archaeology in Oceania 19: 105-16.
* WALSH, G.L. 1994. Bradshaws: ancient rock paintings of north-west
Australia. Geneva.
* WELCH, D.M. 2007. Bradshaw art of the Kimberley, in M.J. Donaldson &
K.F. Kenneally (ed.) Rock art of the Kimberley: proceedings of the Kimberley
Society rock art seminar 2005. Perth, Western Australia: Kimberley Society.
* WELLS, R.T. 1985. Thylacoleo carnifex (Phalangeridae: Marsupialia),
marsupial "lion". in P.V. Rich, G. F. Van Tets & F.Knight (ed.) Kadimakara extinct
vertebrates of Australia. Princeton (NJ): Princeton University Press.
* WELLS, R.T. & NICHOL, B. 1976. On the manus and pes of the cave lion,
Thylacoleo carnifex (Owen) (Marsupialia). Transactions of the Royal Society of
South Australia 101(6): 139-46.
* WELLS, R.T, D.R. HORTON & P. ROGERS 1982. Thylacoleo carnifex
(Owen) (Thylacoleonidae), Marsupial carnivore? in M. Archer (ed.) Carnivorous
Marsupials: 573-86. Sydney: Royal Zoological Society of New South Wales.
Authors
* Kim Akerman
4 Dorset St, Moonah, Tasmania 7009, Australia (Email:
kimakerman@tastel.net.au)
* Tim Willing
Pearl Sea Coastal Cruises, PO Box 2838 Broome, Western Australia 6725
(Email: pearlseacruises@wn.com.au)
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